Zobrazeno 1 - 10
of 19
pro vyhledávání: '"R. B. Hutmacher"'
Publikováno v:
Irrigation and Drainage Systems. 13:321-347
In situ use of ground water by plants is one optionbeing considered to reduce discharge of subsurfacedrainage water from irrigated agriculture. Laboratory, lysimeter, and field studies havedemonstrated that crops can use significant quantitiesof wate
Publikováno v:
Agricultural Water Management. 31:205-223
A 3-year column lysimeter experiment was conducted with cotton ( Gossypium hirsutum L.) to determine the influence of shallow groundwater salinity on groundwater uptake. Nonsaline (0.3 dS m −1 ) irrigation water was applied at 7-day intervals throu
Autor:
C. J. Phene, J. W. Biggar, Grant Cardon, D. Peters, D. E. Rolston, Jiftah Ben-Asher, R. B. Hutmacher
Publikováno v:
Soil Science Society of America Journal. 58:930-934
Publikováno v:
Crop Science. 32:476-481
Alfalfa (Medicago sativa L.) seed production differs from hay production and requires detailed research to determine appropriate water management strategies. Effects of surface-applied irrigation amount, frequency, and prereproductive soil water cont
Publikováno v:
Agricultural Water Management. 19:135-149
A field study was conducted to determine the utility of the crop water stress index ( cwsi ) for assessing plant water status of seed alfalfa ( Medicago sativa L.). Six irrigation treatments consisting of combinations of three rates of irrigation and
Publikováno v:
Agricultural Water Management. 19:151-166
A field experiment was conducted to evaluate the effect of nonuniform application of irrigation water at varying depths on deep percolation losses, crop water use and yield response of cotton. The experiment was conducted in the San Joaquin Valley of
Publikováno v:
Agronomy Journal. 83:417-424
Agronomic researchers usually neglect heteroscedasticity in crop growth formulae and analysis. When they consider it they are not consistent in the methods they use. This study was conducted to: (i) find a method of testing for heteroscedasticity in
Publikováno v:
Transactions of the ASAE. 34:0890-0896
Irrigation system performance is often evaluated based on a uniformity coefficient calculated from water collected in a measuring apparatus or from changes in the soil water content. These measurements are generally made from one test and usually whe
Autor:
R. B. Hutmacher, J. E. Ayars
Publikováno v:
Irrigation Science. 15
A cotton crop coefficient was modified to account for the contribution of shallow groundwater to crop water use. The data used in the modification were developed using weighing column lysimeters. The percentage groundwater contribution to crop water
Autor:
R. B. Hutmacher, J. W. Biggar, F. Dale, S. S. Vail, D. Peters, D. E. Rolston, H. I. Nightingale
Publikováno v:
Irrigation Science. 14
Growth and yield responses of developing almond trees (Prunus amygdalus, Ruby cultivar) to a range of trickle irrigation amounts were determined in 1985 through 1987 (the fifth through seventh year after planting) at the University of California's We